"Would you mind taking two men with you and creeping down as near as you can get to the 'Vorwartz,' Mr. Hythe?" asked the Captain, who was beginning to get impatient. "Take every precaution to keep hidden from view and do not use your fire-arms save as a last resource."

"Very good, sir," replied Hythe.

"I need hardly remind you that I want evidence. Observe traces of footmarks on the banks. They ought to tell whether the crew have landed. If they have put their precious cargo ashore there must be traces of where the heavy chests and bags were hauled over the banks; the reeds will be trampled down, and so on."

Had Hythe not been a sailor he would have made an excellent backwoodsman. Knowing the risk of appearing on the skyline, he led his little band down by the remote side of the hill, and creeping through the bushes at the base gradually worked round in the direction of the river in which the "Vorwartz" lay.

It was risky work, for the lower ground was marshy. Poisonous snakes darted across their path, lizards, more repulsive than dangerous, lay basking in the sun right in their way, while myriads of flies of great size buzzed incessantly over the men's heads, till the tortured three could scarce resist the temptation to raise their arms and beat off their unwelcome attendants. Once a heavy body crashed through the brushwood, scattering the reeds in all directions and uprooting young saplings like ninepins. Hythe had just time to see that the creature was a huge rhinoceros.

Straight towards the "Vorwartz" the creature tore, then plunging into the opposite stream swam boldly across to the opposite bank. Although it made enough noise to be heard for half a mile away the crew of the "Vorwartz" showed no sign of activity. The submarine lay as deserted and silent as the city of the dead.

"Steady, there," cautioned Hythe as one of his companions started forward with disregard to caution. "They may be luring us on. We are near enough at present."

Concealing themselves in the long grass fringing the river, even at the risk of fever, the three waited and watched. The "Vorwartz" was lying close to the bank, the channel evidently trending close to the eastern side of the stream, and there being a total absence of mud in the vicinity, the submarine could not have found a better landing-place.

She was secured fore and aft with ropes made fast to the trunks of trees growing close to the water's edge. No anchor had been run out into the stream and consequently the submarine had swung well in. A fall in the level of the river had left her fairly hard aground with a slight list to port.

That men had landed during the heavy rains was quite evident by the fact that the stiff clay, now burned to the hardness of a brick, was covered with footprints pointing in all directions, but although Hythe made a semi-circular patrol almost from the brink of the stream past the "Vorwartz" and back to the river again he could find no trace of human beings having strayed more than fifty yards from the submarine.